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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1558685000

Certificate GIA 1558685000

Diamond specifications and retailer prices

From $7,330 NZD
$4,124 USD
As of November 1, 2026
Save $5,952 NZD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $13,282 NZD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558685000. Listed at 13 retailers as of October 26, 2026, with prices from $7,330 to $13,282, a $5,952 spread on the same certified stone. Wholesale Diamonds Direct lists it at $13,282. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558685000
Dimensions7.75 × 5.70 × 3.87 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.75 mm5.70 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558685000
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

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 1
Current: $9,398 NZD|Low: $7,330 NZD|High: $13,539 NZD|Avg: $9,410 NZD|-1.6%
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
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$7,330 NZD
Retailer 12$7,414 NZD
Retailer 8$7,536 NZD
Retailer 9$7,708 NZD
Retailer 4$7,944 NZD
Retailer 6$8,280 NZD
Retailer 13$9,167 NZD
Retailer 2$9,196 NZD
Retailer 1$9,398 NZD
Retailer 7$10,095 NZD
Retailer 5$10,383 NZD
Retailer 11$12,272 NZD
Retailer 3$13,042 NZD
Wholesale Diamonds Direct$13,282 NZD

31 data points across 14 retailers

13 retailers$7,330 NZD to $13,282 NZD

A
Cheapest Retailer
-
$7,330 NZD
$4,124 USD
A
Retailer 2
-
$7,414 NZD
SGD 5,637 SGD
View
A
Retailer 3
-
$7,536 NZD
$4,240 USD
View
A
Retailer 4
-
$7,708 NZD
$4,337 USD
View
A
Retailer 5
-
$7,944 NZD
SGD 6,040 SGD
View
A
Retailer 6
-
$8,280 NZD
£3,668 GBP
View
A
Retailer 7
-
$9,167 NZD
$5,158 USD
View
A
Retailer 8
-
$9,196 NZD
$5,174 USD
View
A
Retailer 9
-
$9,398 NZD
€5,036 EUR
View
B+
Retailer 10
-
$10,095 NZD
$5,680 USD
View
B
Retailer 11
-
$12,272 NZD
$6,905 USD
View
B
Retailer 12
-
$13,042 NZD
$7,338 USD
View
Most Expensive
B
Wholesale Diamonds Direct
570704296 · Oct 26
$13,282 NZD
$7,473 USD
View
12 more retailers have this diamond
Prices start from $7,330 NZDSave up to $5,952 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
$7,330 NZD