Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1285728814

Certificate GIA 1285728814

Diamond specifications and retailer prices

From HK$87,754 HKD
$11,185 USD
As of October 28, 2026
Save HK$67,894 HKD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$155,648 HKD at MOH London · As of November 1, 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 D 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 1285728814. Listed at 19 retailers as of October 28, 2026, with prices from HK$87,754 to HK$155,648, a HK$67,894 spread on the same certified stone. MOH London lists it at HK$155,648. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1285728814
Dimensions8.56 × 6.58 × 4.11 mm
L/W Ratio1.30
Culet sizeNone
Top View
8.56 mm6.58 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1285728814
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: HK$155,648 HKD|Low: HK$87,754 HKD|High: HK$157,521 HKD|Avg: HK$119,769 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6HK$87,754 HKD
Retailer 7HK$106,301 HKD
Retailer 2HK$106,366 HKD
Retailer 5HK$106,988 HKD
Retailer 9HK$107,965 HKD
Retailer 10HK$112,115 HKD
Retailer 4HK$119,896 HKD
Retailer 8HK$141,183 HKD
Retailer 3HK$146,413 HKD
MOH LondonHK$155,648 HKD

44 data points across 10 retailers

19 retailersHK$87,754 HKD to HK$155,648 HKD

B+
Cheapest Retailer
-
HK$87,754 HKD
$11,185 USD
B
Retailer 2
-
HK$92,462 HKD
$11,785 USD
View
B
Retailer 3
-
HK$92,587 HKD
$11,801 USD
View
B
Retailer 4
-
HK$93,130 HKD
CA$16,486 CAD
View
B
Retailer 5
-
HK$98,032 HKD
$12,495 USD
View
B
Retailer 6
-
HK$99,656 HKD
$12,702 USD
View
B
Retailer 7
-
HK$106,301 HKD
$13,549 USD
View
B
Retailer 8
-
HK$106,366 HKD
£10,675 GBP
View
Retailer 9
-
HK$106,988 HKD
A$20,979 AUD
View
Price last confirmed 8 days ago
B
Retailer 10
-
HK$107,965 HKD
$13,761 USD
View
B
Retailer 11
-
HK$112,115 HKD
$14,290 USD
View
B
Retailer 12
-
HK$114,390 HKD
$14,580 USD
View
B
Retailer 13
-
HK$114,390 HKD
$14,580 USD
View
B
Retailer 14
-
HK$115,489 HKD
$14,720 USD
View
B
Retailer 15
-
HK$118,235 HKD
$15,070 USD
View
B
Retailer 16
-
HK$119,896 HKD
€14,554 EUR
View
B
Retailer 17
-
HK$141,183 HKD
$17,995 USD
View
B
Retailer 18
-
HK$146,413 HKD
ZAR 301,479 ZAR
View
Most Expensive
B
MOH London
6AEEE2EE4 · Nov 1
HK$155,648 HKD
£15,621 GBP
View
18 more retailers have this diamond
Prices start from HK$87,754 HKDSave up to HK$67,894 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.

B+
1.51ct Oval
HK$87,754 HKD