Oval|Natural|GIA

1.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6555812571

Certificate GIA 6555812571

Diamond specifications and retailer prices

From $5,248 USD
HK$41,000 HKD
As of November 1, 2026
Save $4,988 USD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,400 USD at NZ Jewellers · As of October 20, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555812571. Listed at 10 retailers as of October 29, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle35.77°
OriginNatural
Grading LabGIA
CertificateGIA 6555812571
Dimensions8.80 × 6.29 × 4.04 mm
L/W Ratio1.40
Key to symbols
Crystal, Cloud, Etch Channel, Needle
Top View
8.80 mm6.29 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555812571
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 35.77°Culet: NoneDepth 64.2%

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: Nov 1
Current: $12,400 USD|Low: $5,248 USD|High: $12,943 USD|Avg: $7,853 USD|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3$5,248 USD
Retailer 8$6,217 USD
Retailer 4$6,319 USD
Retailer 2$7,253 USD
Retailer 7$7,414 USD
Retailer 9$7,415 USD
Retailer 5$7,802 USD
Retailer 6$10,236 USD
NZ Jewellers$12,400 USD

38 data points across 9 retailers

10 retailers$5,248 USD to $10,236 USD

A
Cheapest Retailer
-
$5,248 USD
HK$41,000 HKD
Retailer 2
-
$6,217 USD
SGD 8,401 SGD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$6,319 USD
View
B+
Retailer 4
-
$7,253 USD
€6,908 EUR
View
Retailer 5
-
$7,414 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$7,415 USD
A$11,408 AUD
View
Retailer 7
-
$7,528 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$7,802 USD
€7,430 EUR
View
B
Retailer 9
-
$10,236 USD
£8,060 GBP
View
Most Expensive
NZ Jewellers
8f68d38d-4ac2-40b8-9069-7abb2e366b68 · Oct 20
$12,400 USD
View
Price last confirmed 12 days ago
9 more retailers have this diamond
Prices start from $5,248 USDSave up to $4,988 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
$5,248 USD