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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 1545346290

Certificate GIA 1545346290

Diamond specifications and retailer prices

From $4,878 SGD
HK$29,800 HKD
As of November 1, 2026
Save $6,451 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,329 SGD 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545346290. Listed at 18 retailers as of October 28, 2026, with prices from $4,878 to $11,329, a $6,451 spread on the same certified stone. Queensmith lists it at $11,329. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545346290
Dimensions7.47 × 5.88 × 4.12 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.47 mm5.88 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545346290
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.1%

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: $11,329 SGD|Low: $4,829 SGD|High: $11,410 SGD|Avg: $7,045 SGD|+2.1%
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
Retailer 14
Retailer 15
November 2, 2026
Retailer 12$4,878 SGD
Retailer 2$5,242 SGD
Retailer 14$5,694 SGD
Retailer 6$5,751 SGD
Retailer 3$5,946 SGD
Retailer 15$6,202 SGD
Retailer 9$6,406 SGD
Retailer 13$6,442 SGD
Retailer 4$6,510 SGD
Retailer 7$6,545 SGD
Retailer 5$6,636 SGD
Retailer 8$7,289 SGD
Retailer 11$7,918 SGD
Retailer 10$10,260 SGD
Queensmith$11,329 SGD

28 data points across 15 retailers

18 retailers$4,878 SGD to $11,329 SGD

A
Cheapest Retailer
-
$4,878 SGD
HK$29,800 HKD
A
Retailer 2
-
$5,242 SGD
₹390,355 INR
View
A
Retailer 3
-
$5,694 SGD
$4,452 USD
View
A
Retailer 4
-
$5,751 SGD
View
A
Retailer 5
-
$5,946 SGD
$4,649 USD
View
Final sale: no returns
A
Retailer 6
-
$5,980 SGD
$4,676 USD
View
A
Retailer 7
-
$5,985 SGD
$4,680 USD
View
A
Retailer 8
-
$6,202 SGD
View
A
Retailer 9
-
$6,406 SGD
£3,944 GBP
View
A
Retailer 10
-
$6,442 SGD
$5,037 USD
View
B+
Retailer 11
-
$6,510 SGD
$5,090 USD
View
Retailer 12
-
$6,545 SGD
A$7,873 AUD
View
Price last confirmed 24 days ago
B+
Retailer 13
-
$6,624 SGD
A$7,968 AUD
View
B+
Retailer 14
-
$6,636 SGD
$5,189 USD
View
B+
Retailer 15
-
$7,289 SGD
€5,428 EUR
View
B+
Retailer 16
-
$7,918 SGD
ZAR 100,023 ZAR
View
B
Retailer 17
-
$10,260 SGD
£6,317 GBP
View
Most Expensive
B
Queensmith
1545346290 · Oct 28
$11,329 SGD
£6,975 GBP
View
17 more retailers have this diamond
Prices start from $4,878 SGDSave up to $6,451 SGD

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
$4,878 SGD