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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6431020211

Certificate GIA 6431020211

Diamond specifications and retailer prices

From $7,225 NZD
₹387,147 INR
As of October 31, 2026
Save $11,101 NZD (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,326 NZD at Adiamor · As of November 1, 2026
View at Adiamor

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H 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 6431020211. Listed at 18 retailers as of October 31, 2026, with prices from $7,225 to $18,326, a $11,101 spread on the same certified stone. Adiamor lists it at $18,326. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6431020211
Dimensions8.37 × 6.31 × 4.09 mm
L/W Ratio1.33
Top View
8.37 mm6.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6431020211
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.8%

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 31
Current: $11,259 NZD|Low: $6,899 NZD|High: $16,039 NZD|Avg: $9,840 NZD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4$7,225 NZD
Retailer 5$7,234 NZD
Retailer 10$8,366 NZD
Retailer 9$8,679 NZD
Retailer 7$8,735 NZD
Retailer 8$9,183 NZD
Retailer 3$9,709 NZD
Retailer 2$9,951 NZD
Retailer 1$11,259 NZD
Retailer 6$15,933 NZD

38 data points across 10 retailers

18 retailers$7,225 NZD to $18,326 NZD

A
Cheapest Retailer
-
$7,225 NZD
₹387,147 INR
A
Retailer 2
-
$7,234 NZD
HK$31,800 HKD
View
A
Retailer 3
-
$8,366 NZD
$4,707 USD
View
A
Retailer 4
-
$8,497 NZD
$4,781 USD
View
A
Retailer 5
-
$8,679 NZD
$4,883 USD
View
Retailer 6
-
$8,735 NZD
$4,915 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$9,183 NZD
$5,167 USD
View
Final sale: no returns
B+
Retailer 8
-
$9,191 NZD
SGD 6,988 SGD
View
B+
Retailer 9
-
$9,709 NZD
£4,301 GBP
View
B+
Retailer 10
-
$9,951 NZD
$5,599 USD
View
B+
Retailer 11
-
$9,951 NZD
$5,599 USD
View
B+
Retailer 12
-
$9,951 NZD
$5,599 USD
View
B+
Retailer 13
-
$10,225 NZD
$5,753 USD
View
B+
Retailer 14
-
$11,259 NZD
€6,033 EUR
View
B+
Retailer 15
-
$11,481 NZD
$6,460 USD
View
B
Retailer 16
-
$15,933 NZD
£7,059 GBP
View
B
Retailer 17
-
$16,643 NZD
$9,364 USD
View
Most Expensive
B
Adiamor
D-64716253 · Nov 1
$18,326 NZD
$10,311 USD
View
17 more retailers have this diamond
Prices start from $7,225 NZDSave up to $11,101 NZD

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
$7,225 NZD