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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1285728814

Certificate GIA 1285728814

Diamond specifications and retailer prices

From $19,846 NZD
$11,185 USD
As of October 28, 2026
Save $15,354 NZD (44%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $35,200 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 1285728814. Listed at 19 retailers as of October 28, 2026, with prices from $19,846 to $35,200, a $15,354 spread on the same certified stone. MOH London lists it at $35,200. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1285728814
Dimensions8.56 × 6.58 × 4.11 mm
L/W Ratio1.30
Culet sizeNone
Top View
8.56 mm6.58 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1285728814
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

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: $35,200 NZD|Low: $19,846 NZD|High: $35,623 NZD|Avg: $27,093 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$19,846 NZD
Retailer 7$24,040 NZD
Retailer 2$24,055 NZD
Retailer 5$24,195 NZD
Retailer 9$24,416 NZD
Retailer 10$25,355 NZD
Retailer 4$27,114 NZD
Retailer 8$31,929 NZD
Retailer 3$33,111 NZD
MOH London$35,200 NZD

43 data points across 10 retailers

19 retailers$19,846 NZD to $35,200 NZD

B+
Cheapest Retailer
-
$19,846 NZD
$11,185 USD
B
Retailer 2
-
$20,910 NZD
$11,785 USD
View
B
Retailer 3
-
$20,939 NZD
$11,801 USD
View
B
Retailer 4
-
$21,061 NZD
CA$16,486 CAD
View
B
Retailer 5
-
$22,170 NZD
$12,495 USD
View
B
Retailer 6
-
$22,537 NZD
$12,702 USD
View
B
Retailer 7
-
$24,040 NZD
$13,549 USD
View
B
Retailer 8
-
$24,055 NZD
£10,675 GBP
View
Retailer 9
-
$24,195 NZD
A$20,979 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$24,416 NZD
$13,761 USD
View
B
Retailer 11
-
$25,355 NZD
$14,290 USD
View
B
Retailer 12
-
$25,869 NZD
$14,580 USD
View
B
Retailer 13
-
$25,869 NZD
$14,580 USD
View
B
Retailer 14
-
$26,118 NZD
$14,720 USD
View
B
Retailer 15
-
$26,739 NZD
$15,070 USD
View
B
Retailer 16
-
$27,114 NZD
€14,554 EUR
View
B
Retailer 17
-
$31,929 NZD
$17,995 USD
View
B
Retailer 18
-
$33,111 NZD
ZAR 301,479 ZAR
View
Most Expensive
B
MOH London
6AEEE2EE4 · Nov 1
$35,200 NZD
£15,621 GBP
View
18 more retailers have this diamond
Prices start from $19,846 NZDSave up to $15,354 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
$19,846 NZD