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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 2166672066

Certificate GIA 2166672066

Diamond specifications and retailer prices

From $20,119 NZD
$11,320 USD
As of October 28, 2026
Save $15,558 NZD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $35,677 NZD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2166672066. Listed at 19 retailers as of October 28, 2026, with prices from $20,119 to $35,677, a $15,558 spread on the same certified stone. MOH London lists it at $35,677. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2166672066
Dimensions8.71 × 6.71 × 4.08 mm
L/W Ratio1.30
Top View
8.71 mm6.71 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2166672066
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $35,677 NZD|Low: $20,119 NZD|High: $36,106 NZD|Avg: $27,451 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$20,119 NZD
Retailer 7$24,367 NZD
Retailer 3$24,384 NZD
Retailer 5$24,528 NZD
Retailer 10$24,747 NZD
Retailer 9$25,700 NZD
Retailer 2$27,573 NZD
Retailer 8$32,363 NZD
Retailer 4$33,561 NZD
MOH London$35,677 NZD

44 data points across 10 retailers

19 retailers$20,119 NZD to $35,677 NZD

B+
Cheapest Retailer
-
$20,119 NZD
$11,320 USD
B
Retailer 2
-
$21,194 NZD
$11,925 USD
View
B
Retailer 3
-
$21,226 NZD
$11,943 USD
View
B
Retailer 4
-
$21,351 NZD
CA$16,685 CAD
View
B
Retailer 5
-
$22,465 NZD
$12,640 USD
View
B
Retailer 6
-
$22,844 NZD
$12,853 USD
View
B
Retailer 7
-
$24,367 NZD
$13,710 USD
View
B
Retailer 8
-
$24,384 NZD
£10,803 GBP
View
Retailer 9
-
$24,528 NZD
A$21,231 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$24,747 NZD
$13,924 USD
View
B
Retailer 11
-
$25,700 NZD
$14,460 USD
View
B
Retailer 12
-
$26,197 NZD
$14,740 USD
View
B
Retailer 13
-
$26,197 NZD
$14,740 USD
View
B
Retailer 14
-
$26,476 NZD
$14,897 USD
View
B
Retailer 15
-
$27,068 NZD
$15,230 USD
View
B
Retailer 16
-
$27,573 NZD
€14,775 EUR
View
B
Retailer 17
-
$32,363 NZD
$18,209 USD
View
B
Retailer 18
-
$33,561 NZD
ZAR 305,059 ZAR
View
Most Expensive
B
MOH London
8A6CB078A · Nov 1
$35,677 NZD
£15,806 GBP
View
18 more retailers have this diamond
Prices start from $20,119 NZDSave up to $15,558 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.

B+
1.51ct Oval
$20,119 NZD