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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6551118729

Certificate GIA 6551118729

Diamond specifications and retailer prices

From $8,731 NZD
As of November 6, 2026
Save $8,367 NZD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $17,097 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551118729. Listed at 8 retailers as of November 4, 2026, with prices from $8,731 to $17,097, a $8,367 spread on the same certified stone. MOH London lists it at $17,097. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551118729
Dimensions9.31 × 6.06 × 4.10 mm
L/W Ratio1.54
Top View
9.31 mm6.06 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551118729
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.6%

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 6
Current: $17,097 NZD|Low: $8,731 NZD|High: $17,349 NZD|Avg: $12,278 NZD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$8,731 NZD
Retailer 3$11,051 NZD
Retailer 5$11,635 NZD
Retailer 4$12,708 NZD
MOH London$17,097 NZD

42 data points across 5 retailers

8 retailers$8,731 NZD to $17,097 NZD

A
Cheapest Retailer
-
$8,731 NZD
A
Retailer 2
-
$10,122 NZD
View
A
Retailer 3
-
$10,149 NZD
View
A
Retailer 4
-
$11,051 NZD
View
Retailer 5
-
$11,635 NZD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$11,920 NZD
View
A
Retailer 7
-
$12,708 NZD
View
Most Expensive
B+
MOH London
AFA2496EC · Nov 4
$17,097 NZD
£7,463 GBP
View
7 more retailers have this diamond
Prices start from $8,731 NZDSave up to $8,367 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
$8,731 NZD