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Cushion|Natural|GIA

1.20ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1559836848

Certificate GIA 1559836848

Diamond specifications and retailer prices

From £2,159 GBP
HK$22,600 HKD
As of November 2, 2026
Save £2,793 GBP (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,952 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 H 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 1559836848. Listed at 19 retailers as of October 28, 2026, with prices from £2,159 to £4,952, a £2,793 spread on the same certified stone. Queensmith lists it at £4,952. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559836848
Dimensions7.70 × 5.44 × 3.42 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.70 mm5.44 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559836848
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £4,952 GBP|Low: £2,159 GBP|High: £4,971 GBP|Avg: £3,104 GBP|+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
Retailer 14
Retailer 15
November 2, 2026
Retailer 8£2,159 GBP
Retailer 2£2,251 GBP
Retailer 5£2,542 GBP
Retailer 4£2,579 GBP
Retailer 12£2,638 GBP
Retailer 9£2,787 GBP
Retailer 3£2,881 GBP
Retailer 13£2,923 GBP
Retailer 11£2,967 GBP
Retailer 7£3,015 GBP
Retailer 6£3,099 GBP
Retailer 10£3,344 GBP
Retailer 15£3,541 GBP
Retailer 14£4,818 GBP
Queensmith£4,952 GBP

25 data points across 15 retailers

19 retailers£2,159 GBP to £4,952 GBP

B+
Cheapest Retailer
-
£2,159 GBP
HK$22,600 HKD
B+
Retailer 2
-
£2,251 GBP
₹287,260 INR
View
B+
Retailer 3
-
£2,542 GBP
SGD 4,603 SGD
View
B
Retailer 4
-
£2,579 GBP
$3,455 USD
View
B+
Retailer 5
-
£2,638 GBP
$3,534 USD
View
Final sale: no returns
B
Retailer 6
-
£2,667 GBP
$3,573 USD
View
B
Retailer 7
-
£2,668 GBP
$3,575 USD
View
B
Retailer 8
-
£2,787 GBP
View
B
Retailer 9
-
£2,827 GBP
A$5,828 AUD
View
B
Retailer 10
-
£2,881 GBP
$3,860 USD
View
B
Retailer 11
-
£2,923 GBP
View
B
Retailer 12
-
£2,967 GBP
$3,975 USD
View
B
Retailer 13
-
£3,015 GBP
$4,040 USD
View
B
Retailer 14
-
£3,099 GBP
$4,153 USD
View
Retailer 15
-
£3,111 GBP
A$6,414 AUD
View
Price last confirmed 24 days ago
B
Retailer 16
-
£3,344 GBP
€4,267 EUR
View
B
Retailer 17
-
£3,541 GBP
ZAR 76,651 ZAR
View
B
Retailer 18
-
£4,818 GBP
View
Most Expensive
B
Queensmith
1559836848 · Oct 28
£4,952 GBP
View
18 more retailers have this diamond
Prices start from £2,159 GBPSave up to £2,793 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.

B+
1.20ct Cushion
£2,159 GBP