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Cushion|Natural|GIA

1.20ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 1549436037

Certificate GIA 1549436037

Diamond specifications and retailer prices

From £1,580 GBP
As of November 6, 2026
Save £1,890 GBP (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,232 GBP 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549436037. Listed at 13 retailers as of November 4, 2026, with a 120% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549436037
Dimensions5.84 × 5.80 × 3.81 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
5.84 mm5.80 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549436037
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

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: £4,232 GBP|Low: £1,580 GBP|High: £4,241 GBP|Avg: £2,349 GBP|+3.0%
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
November 6, 2026
Retailer 2£1,580 GBP
Retailer 13£1,833 GBP
Retailer 5£1,858 GBP
Retailer 9£1,875 GBP
Retailer 4£1,924 GBP
Retailer 3£1,999 GBP
Retailer 12£2,091 GBP
Retailer 7£2,102 GBP
Retailer 11£2,159 GBP
Retailer 8£2,424 GBP
Retailer 6£2,467 GBP
Retailer 10£3,470 GBP
Queensmith£4,232 GBP

24 data points across 13 retailers

13 retailers£1,580 GBP to £3,470 GBP

A
Cheapest Retailer
-
£1,580 GBP
A
Retailer 2
-
£1,833 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,858 GBP
View
A
Retailer 4
-
£1,875 GBP
View
A
Retailer 5
-
£1,924 GBP
View
Retailer 6
-
£1,999 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£2,091 GBP
View
B+
Retailer 8
-
£2,102 GBP
View
B+
Retailer 9
-
£2,159 GBP
View
B+
Retailer 10
-
£2,424 GBP
View
B+
Retailer 11
-
£2,467 GBP
View
B
Retailer 12
-
£3,470 GBP
View
Most Expensive
Queensmith
1549436037 · Oct 28
£4,232 GBP
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from £1,580 GBPSave up to £1,890 GBP

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
£1,580 GBP