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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6515090345

Certificate GIA 6515090345

Diamond specifications and retailer prices

From HK$6,465 HKD
$824 USD
As of November 2, 2026
Save HK$7,774 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$14,239 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6515090345. Listed at 21 retailers as of October 29, 2026, with prices from HK$6,465 to HK$14,239, a HK$7,774 spread on the same certified stone. MOH London lists it at HK$14,239. 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

0.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.03°
Pavilion angle39.22°
OriginNatural
Grading LabGIA
CertificateGIA 6515090345
Dimensions6.18 × 4.48 × 2.77 mm
L/W Ratio1.38
Top View
6.18 mm4.48 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515090345
Side View
Table 58.0%Crown 40.03°Girdle: MED-THKPavilion 39.22°Culet: NoneDepth 61.9%

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: Nov 2
Current: HK$14,239 HKD|Low: HK$5,390 HKD|High: HK$14,339 HKD|Avg: HK$8,829 HKD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9HK$6,465 HKD
Retailer 3HK$6,873 HKD
Retailer 7HK$6,905 HKD
Retailer 8HK$7,007 HKD
Retailer 10HK$7,689 HKD
Retailer 4HK$7,726 HKD
Retailer 6HK$8,238 HKD
Retailer 2HK$10,866 HKD
Retailer 11HK$11,540 HKD
Retailer 5HK$11,938 HKD
MOH LondonHK$14,239 HKD

32 data points across 11 retailers

21 retailersHK$6,465 HKD to HK$14,239 HKD

B+
Cheapest Retailer
-
HK$6,465 HKD
$824 USD
Final sale: no returns
B+
Retailer 2
-
HK$6,873 HKD
$876 USD
View
B+
Retailer 3
-
HK$6,905 HKD
$880 USD
View
Retailer 4
-
HK$7,007 HKD
$893 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
HK$7,007 HKD
$893 USD
View
B+
Retailer 6
-
HK$7,085 HKD
$903 USD
View
B+
Retailer 7
-
HK$7,689 HKD
$980 USD
View
B+
Retailer 8
-
HK$7,726 HKD
£775 GBP
View
B+
Retailer 9
-
HK$7,798 HKD
$994 USD
View
Retailer 10
-
HK$8,081 HKD
$1,030 USD
View
Price last confirmed 34 days ago
B
Retailer 11
-
HK$8,081 HKD
$1,030 USD
View
B
Retailer 12
-
HK$8,238 HKD
$1,050 USD
View
B
Retailer 13
-
HK$8,238 HKD
$1,050 USD
View
B
Retailer 14
-
HK$8,238 HKD
$1,050 USD
View
B
Retailer 15
-
HK$8,552 HKD
$1,090 USD
View
B
Retailer 16
-
HK$10,866 HKD
€1,319 EUR
View
Retailer 17
-
HK$11,540 HKD
A$2,263 AUD
View
Price last confirmed 33 days ago
B
Retailer 18
-
HK$11,938 HKD
ZAR 24,580 ZAR
View
Most Expensive
B
MOH London
3B8888A20 · Oct 29
HK$14,239 HKD
£1,429 GBP
View
18 more retailers have this diamond
Prices start from HK$6,465 HKDSave up to HK$7,774 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+
0.51ct Oval
HK$6,465 HKD