CaratHunter
Plans
Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 7548774120

Certificate GIA 7548774120

Diamond specifications and retailer prices

From $5,388 AUD
HK$29,500 HKD
As of November 1, 2026
Save $7,197 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,585 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded F 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 7548774120. Listed at 15 retailers as of October 28, 2026, with prices from $5,388 to $12,585, a $7,197 spread on the same certified stone. Queensmith lists it at $12,585. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548774120
Dimensions7.90 × 5.89 × 3.99 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
7.90 mm5.89 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548774120
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: 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: $12,585 AUD|Low: $5,351 AUD|High: $12,667 AUD|Avg: $7,570 AUD|+2.2%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 10$5,388 AUD
Retailer 6$5,767 AUD
Retailer 5$6,350 AUD
Retailer 3$6,574 AUD
Retailer 7$6,710 AUD
Retailer 12$6,857 AUD
Retailer 2$7,082 AUD
Retailer 11$7,122 AUD
Retailer 4$7,338 AUD
Retailer 13$7,520 AUD
Retailer 8$8,058 AUD
Retailer 9$11,342 AUD
Queensmith$12,585 AUD

26 data points across 13 retailers

15 retailers$5,388 AUD to $12,585 AUD

A
Cheapest Retailer
-
$5,388 AUD
HK$29,500 HKD
A
Retailer 2
-
$5,767 AUD
₹384,944 INR
View
A
Retailer 3
-
$6,350 AUD
SGD 6,014 SGD
View
A
Retailer 4
-
$6,574 AUD
$4,607 USD
View
Final sale: no returns
A
Retailer 5
-
$6,602 AUD
$4,627 USD
View
A
Retailer 6
-
$6,710 AUD
£3,703 GBP
View
A
Retailer 7
-
$6,857 AUD
SGD 6,494 SGD
View
A
Retailer 8
-
$7,082 AUD
£3,908 GBP
View
A
Retailer 9
-
$7,122 AUD
$4,991 USD
View
A
Retailer 10
-
$7,338 AUD
$5,143 USD
View
A
Retailer 11
-
$7,390 AUD
View
B+
Retailer 12
-
$7,520 AUD
$5,270 USD
View
B+
Retailer 13
-
$8,058 AUD
€5,378 EUR
View
B+
Retailer 14
-
$11,342 AUD
£6,259 GBP
View
Most Expensive
B
Queensmith
7548774120 · Oct 28
$12,585 AUD
£6,945 GBP
View
14 more retailers have this diamond
Prices start from $5,388 AUDSave up to $7,197 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 Cushion
$5,388 AUD