Oval|Natural|GIA

1.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 5231939776

Certificate GIA 5231939776

Diamond specifications and retailer prices

From $5,123 USD
As of October 28, 2026
Save $6,355 USD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,478 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231939776. Listed at 22 retailers as of October 28, 2026, with prices from $5,123 to $11,478, a $6,355 spread on the same certified stone. NZ Jewellers lists it at $11,478. 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
G
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.75°
OriginNatural
Grading LabGIA
CertificateGIA 5231939776
Dimensions8.99 × 6.34 × 4.05 mm
L/W Ratio1.42
Top View
8.99 mm6.34 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231939776
Side View
Table 58.0%CrownGirdle: MED-THKPavilion 36.75°Culet: NoneDepth 63.9%

Caratlytics Score

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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: $11,478 USD|Low: $4,160 USD|High: $11,478 USD|Avg: $6,266 USD|+16.2%
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 31, 2026
Retailer 10$4,160 USD
Retailer 12$5,114 USD
Retailer 21$5,123 USD
Retailer 8$5,261 USD
Retailer 9$5,526 USD
Retailer 5$5,673 USD
Retailer 11$5,724 USD
Retailer 19$5,739 USD
Retailer 15$5,799 USD
Retailer 14$5,814 USD
Retailer 18$5,936 USD
Retailer 16$6,393 USD
Retailer 4$6,533 USD
Retailer 17$6,621 USD
Retailer 2$6,646 USD
Retailer 3$6,990 USD
Retailer 6$6,990 USD
Retailer 13$7,128 USD
Retailer 7$7,220 USD
Retailer 20$10,124 USD
NZ Jewellers$11,478 USD

31 data points across 21 retailers

22 retailers$5,123 USD to $11,478 USD

Retailer 1
-
$4,160 USD
HK$32,500 HKD
Price last confirmed 17 days ago
Retailer 2
-
$5,114 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$5,123 USD
View
Retailer 4
-
$5,261 USD
SGD 7,110 SGD
View
Price last confirmed 17 days ago
Retailer 5
-
$5,526 USD
£4,351 GBP
View
Price last confirmed 17 days ago
A
Retailer 6
-
$5,673 USD
View
Retailer 7
-
$5,724 USD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$5,739 USD
View
Final sale: no returns
A
Retailer 9
-
$5,799 USD
CA$8,054 CAD
View
Retailer 10
-
$5,814 USD
View
Price last confirmed 32 days ago
A
Retailer 11
-
$5,936 USD
View
B+
Retailer 12
-
$6,393 USD
View
B+
Retailer 13
-
$6,533 USD
View
B+
Retailer 14
-
$6,621 USD
View
B+
Retailer 15
-
$6,646 USD
£5,233 GBP
View
B+
Retailer 16
-
$6,990 USD
View
B+
Retailer 17
-
$6,990 USD
View
B+
Retailer 18
-
$7,128 USD
€6,789 EUR
View
B+
Retailer 19
-
$7,220 USD
View
Retailer 20
-
$9,573 USD
View
Price last confirmed 22 days ago
B
Retailer 21
-
$10,124 USD
£7,972 GBP
View
Most Expensive
B
NZ Jewellers
ecc6dc5c-dc11-47c2-bc80-334fc94d5ca7 · Oct 30
$11,478 USD
View
21 more retailers have this diamond
Prices start from $5,123 USDSave up to $6,355 USD

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
$5,123 USD