Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1545912378

Certificate GIA 1545912378

Diamond specifications and retailer prices

From $2,982 USD
As of November 6, 2026
Save $3,562 USD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,680 USD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545912378. Listed at 19 retailers as of November 2, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1545912378
Dimensions7.28 × 5.45 × 3.69 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint
Top View
7.28 mm5.45 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1545912378
Side View
Table 66.0%CrownGirdle: STK-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 6
Current: $6,680 USD|Low: $2,956 USD|High: $6,820 USD|Avg: $4,315 USD|-2.0%
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 6, 2026
Retailer 15$2,982 USD
Retailer 2$3,100 USD
Retailer 6$3,553 USD
Retailer 5$3,612 USD
Retailer 13$3,623 USD
Retailer 4$3,735 USD
Retailer 10$3,761 USD
Retailer 8$3,796 USD
Retailer 11$3,940 USD
Retailer 3$4,059 USD
Retailer 7$4,177 USD
Retailer 9$4,403 USD
Retailer 12$4,776 USD
Retailer 14$6,544 USD
Queensmith$6,680 USD

23 data points across 15 retailers

19 retailers$2,982 USD to $6,544 USD

A
Cheapest Retailer
-
$2,982 USD
B+
Retailer 2
-
$3,100 USD
View
B+
Retailer 3
-
$3,553 USD
View
B+
Retailer 4
-
$3,612 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,623 USD
View
B+
Retailer 6
-
$3,735 USD
View
B+
Retailer 7
-
$3,761 USD
View
B+
Retailer 8
-
$3,780 USD
View
B+
Retailer 9
-
$3,796 USD
View
B+
Retailer 10
-
$3,940 USD
View
B+
Retailer 11
-
$4,035 USD
View
Retailer 12
-
$4,053 USD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$4,059 USD
View
B+
Retailer 14
-
$4,177 USD
View
B+
Retailer 15
-
$4,403 USD
View
Retailer 16
-
$4,412 USD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$4,776 USD
View
B
Retailer 18
-
$6,544 USD
View
Most Expensive
Queensmith
1545912378 · Oct 28
$6,680 USD
£5,260 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $2,982 USDSave up to $3,562 USD

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
1.20ct Cushion
$2,982 USD