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Oval|Natural|GIA

1.50ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 6521686653

Certificate GIA 6521686653

Diamond specifications and retailer prices

From $12,268 NZD
As of October 31, 2026
Save $16,489 NZD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $28,758 NZD at Adiamor · As of October 30, 2026
View at Adiamor

About this 1.5ct natural oval diamond

This 1.5ct 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 6521686653. Listed at 22 retailers as of October 30, 2026, with prices from $12,268 to $28,758, a $16,489 spread on the same certified stone. Adiamor lists it at $28,758. 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

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6521686653
Dimensions8.71 × 6.36 × 4.04 mm
L/W Ratio1.37
Top View
8.71 mm6.36 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521686653
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.6%

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: Oct 31
Current: $15,661 NZD|Low: $12,238 NZD|High: $17,281 NZD|Avg: $14,612 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 4$12,268 NZD
Retailer 13$12,283 NZD
Retailer 7$12,957 NZD
Retailer 12$12,970 NZD
Retailer 14$13,177 NZD
Retailer 10$14,025 NZD
Retailer 3$14,034 NZD
Retailer 1$15,661 NZD
Retailer 5$15,863 NZD
Retailer 2$16,026 NZD
Retailer 15$16,679 NZD
Retailer 6$16,717 NZD
Retailer 8$16,722 NZD
Retailer 11$16,722 NZD
Retailer 9$17,281 NZD

33 data points across 15 retailers

22 retailers$12,268 NZD to $28,758 NZD

A
Cheapest Retailer
-
$12,268 NZD
A
Retailer 2
-
$12,283 NZD
View
A
Retailer 3
-
$12,957 NZD
View
Final sale: no returns
A
Retailer 4
-
$12,970 NZD
View
A
Retailer 5
-
$13,177 NZD
View
Retailer 6
-
$13,502 NZD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$14,025 NZD
View
A
Retailer 8
-
$14,034 NZD
View
Retailer 9
-
$15,535 NZD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$15,661 NZD
View
Retailer 11
-
$15,863 NZD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$16,026 NZD
View
B+
Retailer 13
-
$16,679 NZD
View
B+
Retailer 14
-
$16,722 NZD
View
B+
Retailer 15
-
$16,722 NZD
View
Retailer 16
-
$16,830 NZD
View
Price last confirmed 8 days ago
Retailer 17
-
$17,088 NZD
View
Price last confirmed 8 days ago
B+
Retailer 18
-
$17,281 NZD
View
B+
Retailer 19
-
$17,287 NZD
View
B+
Retailer 20
-
$19,419 NZD
View
Retailer 21
-
$28,150 NZD
View
Price last confirmed 7 days ago
Most Expensive
B
Adiamor
D-69057583 · Oct 30
$28,758 NZD
$15,942 USD
View
21 more retailers have this diamond
Prices start from $12,268 NZDSave up to $16,489 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
1.50ct Oval
$12,268 NZD