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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

EX • E/SI2 • GIA 6551551304

Certificate GIA 6551551304

Diamond specifications and retailer prices

From $7,225 NZD
HK$31,700 HKD
As of October 30, 2026
Save $9,169 NZD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $16,394 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551551304. Listed at 17 retailers as of October 28, 2026, with prices from $7,225 to $16,394, a $9,169 spread on the same certified stone. Queensmith lists it at $16,394. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551551304
Dimensions7.68 × 5.89 × 4.08 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Knot, Cavity, Needle
Top View
7.68 mm5.89 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551551304
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.2%

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 30
Current: $16,394 NZD|Low: $7,225 NZD|High: $16,462 NZD|Avg: $10,229 NZD|+2.4%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 3$7,225 NZD
Retailer 2$7,824 NZD
Retailer 8$8,539 NZD
Retailer 10$8,878 NZD
Retailer 9$8,984 NZD
Retailer 4$9,282 NZD
Retailer 5$9,498 NZD
Retailer 12$9,736 NZD
Retailer 11$10,009 NZD
Retailer 7$11,002 NZD
Retailer 6$15,589 NZD
Queensmith$16,394 NZD

33 data points across 12 retailers

17 retailers$7,225 NZD to $16,394 NZD

A
Cheapest Retailer
-
$7,225 NZD
HK$31,700 HKD
A
Retailer 2
-
$7,824 NZD
₹418,518 INR
View
A
Retailer 3
-
$8,539 NZD
SGD 6,481 SGD
View
A
Retailer 4
-
$8,878 NZD
$4,986 USD
View
A
Retailer 5
-
$8,984 NZD
$5,046 USD
View
Final sale: no returns
A
Retailer 6
-
$9,282 NZD
SGD 7,045 SGD
View
A
Retailer 7
-
$9,498 NZD
£4,200 GBP
View
Retailer 8
-
$9,736 NZD
$5,468 USD
View
Price last confirmed 22 days ago
Retailer 9
-
$9,736 NZD
$5,468 USD
View
Price last confirmed 29 days ago
Retailer 10
-
$9,736 NZD
$5,468 USD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$10,009 NZD
$5,621 USD
View
A
Retailer 12
-
$10,078 NZD
A$8,708 AUD
View
A
Retailer 13
-
$11,002 NZD
€5,885 EUR
View
Retailer 14
-
$11,233 NZD
$6,309 USD
View
Price last confirmed 21 days ago
B+
Retailer 15
-
$15,589 NZD
£6,894 GBP
View
Retailer 16
-
$16,283 NZD
$9,145 USD
View
Price last confirmed 30 days ago
Most Expensive
B
Queensmith
6551551304 · Oct 28
$16,394 NZD
£7,250 GBP
View
16 more retailers have this diamond
Prices start from $7,225 NZDSave up to $9,169 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
$7,225 NZD