Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 5231846819

Certificate GIA 5231846819

Diamond specifications and retailer prices

From HK$50,137 HKD
$6,390 USD
As of October 28, 2026
Save HK$39,524 HKD (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$89,661 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231846819. Listed at 22 retailers as of October 28, 2026, with prices from HK$50,137 to HK$89,661, a HK$39,524 spread on the same certified stone. MOH London lists it at HK$89,661. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231846819
Dimensions8.93 × 6.37 × 4.02 mm
L/W Ratio1.40
Top View
8.93 mm6.37 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231846819
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 38.6°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: HK$89,661 HKD|Low: HK$46,097 HKD|High: HK$100,548 HKD|Avg: HK$59,688 HKD|+6.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
October 30, 2026
Retailer 11HK$46,097 HKD
Retailer 7HK$49,101 HKD
Retailer 12HK$49,729 HKD
Retailer 10HK$49,940 HKD
Retailer 22HK$50,137 HKD
Retailer 17HK$51,157 HKD
Retailer 6HK$51,531 HKD
Retailer 8HK$51,821 HKD
Retailer 3HK$52,537 HKD
Retailer 2HK$53,741 HKD
Retailer 14HK$54,217 HKD
Retailer 24HK$55,448 HKD
Retailer 9HK$55,752 HKD
Retailer 5HK$57,341 HKD
Retailer 19HK$59,709 HKD
Retailer 13HK$60,837 HKD
Retailer 20HK$61,843 HKD
Retailer 23HK$64,652 HKD
Retailer 25HK$64,652 HKD
Retailer 4HK$66,770 HKD
Retailer 21HK$66,772 HKD
Retailer 18HK$66,844 HKD
Retailer 16HK$72,589 HKD
MOH LondonHK$89,661 HKD
Retailer 15HK$99,473 HKD

21 data points across 25 retailers

22 retailersHK$50,137 HKD to HK$89,661 HKD

Retailer 1
-
HK$49,101 HKD
$6,258 USD
Price last confirmed 12 days ago
Retailer 2
-
HK$49,940 HKD
$6,365 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
HK$50,137 HKD
$6,390 USD
View
Retailer 4
-
HK$51,157 HKD
$6,520 USD
View
Price last confirmed 18 days ago
Retailer 5
-
HK$51,531 HKD
€6,255 EUR
View
Price last confirmed 12 days ago
Retailer 6
-
HK$51,821 HKD
$6,605 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
HK$52,537 HKD
$6,696 USD
View
B+
Retailer 8
-
HK$53,741 HKD
CA$9,513 CAD
View
Retailer 9
-
HK$54,217 HKD
$6,910 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
HK$55,448 HKD
$7,067 USD
View
Retailer 11
-
HK$57,025 HKD
$7,268 USD
View
Price last confirmed 12 days ago
Retailer 12
-
HK$57,341 HKD
A$11,243 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
HK$57,645 HKD
$7,347 USD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
HK$59,709 HKD
$7,610 USD
View
B+
Retailer 15
-
HK$60,837 HKD
£6,105 GBP
View
B+
Retailer 16
-
HK$61,843 HKD
$7,882 USD
View
B+
Retailer 17
-
HK$64,652 HKD
$8,240 USD
View
B+
Retailer 18
-
HK$64,652 HKD
$8,240 USD
View
B+
Retailer 19
-
HK$66,770 HKD
$8,510 USD
View
B+
Retailer 20
-
HK$66,772 HKD
€8,105 EUR
View
Retailer 21
-
HK$66,844 HKD
$8,519 USD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
456809E73 · Oct 29
HK$89,661 HKD
£8,998 GBP
View
21 more retailers have this diamond
Prices start from HK$50,137 HKDSave up to HK$39,524 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
HK$50,137 HKD