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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 $5,776 AUD
HK$31,700 HKD
As of October 29, 2026
Save $7,330 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,106 AUD 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 $5,776 to $13,106, a $7,330 spread on the same certified stone. Queensmith lists it at $13,106. 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 29
Current: $13,106 AUD|Low: $5,776 AUD|High: $13,160 AUD|Avg: $8,197 AUD|+0.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3$5,776 AUD
Retailer 5$6,260 AUD
Retailer 8$6,827 AUD
Retailer 10$7,097 AUD
Retailer 9$7,182 AUD
Retailer 4$7,421 AUD
Retailer 2$7,570 AUD
Retailer 12$7,783 AUD
Retailer 11$8,001 AUD
Retailer 7$8,796 AUD
Retailer 6$12,462 AUD
Queensmith$13,106 AUD

32 data points across 12 retailers

17 retailers$5,776 AUD to $13,106 AUD

A
Cheapest Retailer
-
$5,776 AUD
HK$31,700 HKD
A
Retailer 2
-
$6,260 AUD
₹418,836 INR
View
A
Retailer 3
-
$6,827 AUD
SGD 6,481 SGD
View
A
Retailer 4
-
$7,097 AUD
$4,986 USD
View
A
Retailer 5
-
$7,182 AUD
$5,046 USD
View
Final sale: no returns
A
Retailer 6
-
$7,421 AUD
SGD 7,045 SGD
View
A
Retailer 7
-
$7,570 AUD
£4,187 GBP
View
A
Retailer 8
-
$7,783 AUD
$5,468 USD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$7,783 AUD
$5,468 USD
View
Price last confirmed 29 days ago
A
Retailer 10
-
$7,783 AUD
$5,468 USD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$8,001 AUD
$5,621 USD
View
A
Retailer 12
-
$8,057 AUD
View
A
Retailer 13
-
$8,796 AUD
€5,885 EUR
View
A
Retailer 14
-
$8,980 AUD
$6,309 USD
View
Price last confirmed 20 days ago
B+
Retailer 15
-
$12,462 AUD
£6,894 GBP
View
B
Retailer 16
-
$13,017 AUD
$9,145 USD
View
Price last confirmed 30 days ago
Most Expensive
B
Queensmith
6551551304 · Oct 28
$13,106 AUD
£7,250 GBP
View
16 more retailers have this diamond
Prices start from $5,776 AUDSave up to $7,330 AUD

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
$5,776 AUD