CaratHunter
Plans
Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 7506516705

Certificate GIA 7506516705

Diamond specifications and retailer prices

From $10,371 NZD
$5,835 USD
As of October 28, 2026
Save $6,515 NZD (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $16,886 NZD at Cape Diamonds · As of October 31, 2026
View at Cape Diamonds

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded F 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 7506516705. Listed at 7 retailers as of October 28, 2026, with prices from $10,371 to $16,886, a $6,515 spread on the same certified stone. Cape Diamonds lists it at $16,886. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7506516705
Dimensions7.19 × 5.71 × 3.88 mm
L/W Ratio1.26
Culet sizeNone
Top View
7.19 mm5.71 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7506516705
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

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 28
Current: $16,886 NZD|Low: $9,967 NZD|High: $16,886 NZD|Avg: $12,240 NZD|+3.1%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 4$10,371 NZD
Retailer 6$10,644 NZD
Retailer 7$10,874 NZD
Retailer 5$10,964 NZD
Retailer 3$12,685 NZD
Retailer 2$13,792 NZD
Cape Diamonds$16,886 NZD

41 data points across 7 retailers

7 retailers$10,371 NZD to $16,886 NZD

A
Cheapest Retailer
-
$10,371 NZD
$5,835 USD
A
Retailer 2
-
$10,644 NZD
$5,989 USD
View
A
Retailer 3
-
$10,677 NZD
A$9,242 AUD
View
A
Retailer 4
-
$10,874 NZD
$6,118 USD
View
B+
Retailer 5
-
$12,685 NZD
$7,137 USD
View
B+
Retailer 6
-
$13,792 NZD
£6,111 GBP
View
Most Expensive
B+
Cape Diamonds
cert_7506516705 · Oct 31
$16,886 NZD
ZAR 153,488 ZAR
View
6 more retailers have this diamond
Prices start from $10,371 NZDSave up to $6,515 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 Radiant
$10,371 NZD