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Oval|Natural|GIA

1.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 5556995187

Certificate GIA 5556995187

Diamond specifications and retailer prices

From $3,622 USD
HK$28,300 HKD
As of October 29, 2026
Save $4,889 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,511 USD at NZ Jewellers · As of October 27, 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 5556995187. Listed at 21 retailers as of October 27, 2026, with prices from $3,622 to $8,511, a $4,889 spread on the same certified stone. NZ Jewellers lists it at $8,511. 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
Crown angle37.8°
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556995187
Dimensions8.60 × 6.39 × 4.22 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Top View
8.60 mm6.39 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5556995187
Side View
Table 59.0%Crown 37.8°Girdle: MED-VTKPavilion 38.6°Culet: NoneDepth 65.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $8,511 USD|Low: $3,622 USD|High: $8,765 USD|Avg: $4,993 USD|-2.9%
NZ Jewellers
Retailer 2
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Retailer 21
October 29, 2026
Retailer 5$3,622 USD
Retailer 19$3,748 USD
Retailer 14$3,800 USD
Retailer 10$3,894 USD
Retailer 11$4,085 USD
Retailer 7$4,426 USD
Retailer 20$4,426 USD
Retailer 21$4,426 USD
Retailer 2$4,557 USD
Retailer 9$4,683 USD
Retailer 16$4,760 USD
Retailer 13$4,858 USD
Retailer 3$4,980 USD
Retailer 8$4,980 USD
Retailer 12$5,106 USD
Retailer 4$5,140 USD
Retailer 18$5,210 USD
Retailer 15$5,394 USD
Retailer 6$5,682 USD
Retailer 17$7,822 USD
NZ Jewellers$8,511 USD

25 data points across 21 retailers

21 retailers$3,622 USD to $8,511 USD

A
Cheapest Retailer
-
$3,622 USD
HK$28,300 HKD
A
Retailer 2
-
$3,748 USD
View
A
Retailer 3
-
$3,800 USD
View
A
Retailer 4
-
$3,894 USD
View
A
Retailer 5
-
$4,085 USD
View
Final sale: no returns
A
Retailer 6
-
$4,426 USD
View
A
Retailer 7
-
$4,426 USD
View
A
Retailer 8
-
$4,426 USD
View
A
Retailer 9
-
$4,557 USD
View
A
Retailer 10
-
$4,683 USD
View
A
Retailer 11
-
$4,760 USD
£3,748 GBP
View
A
Retailer 12
-
$4,858 USD
£3,825 GBP
View
A
Retailer 13
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$4,980 USD
View
A
Retailer 14
-
$4,980 USD
View
A
Retailer 15
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$5,106 USD
View
A
Retailer 16
-
$5,140 USD
View
A
Retailer 17
-
$5,210 USD
€4,962 EUR
View
A
Retailer 18
-
$5,394 USD
View
A
Retailer 19
-
$5,682 USD
View
B+
Retailer 20
-
$7,822 USD
£6,159 GBP
View
Most Expensive
B
NZ Jewellers
72cea195-2876-4593-b6f0-6e66d96eb4c4 · Oct 27
$8,511 USD
View
20 more retailers have this diamond
Prices start from $3,622 USDSave up to $4,889 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
$3,622 USD