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Marquise|Natural|GIA

1.22ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7556938122

Certificate GIA 7556938122

Diamond specifications and retailer prices

From £2,079 GBP
As of October 31, 2026
Save £1,876 GBP (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,955 GBP at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.22ct natural marquise diamond

This 1.22ct natural marquise sits in the classic one-carat band, graded J 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 7556938122. Listed at 14 retailers as of October 31, 2026, with prices from £2,079 to £3,955, a £1,876 spread on the same certified stone. Helzberg Diamonds lists it at £3,955. 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

1.22
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.51°
Pavilion angle41.66°
OriginNatural
Grading LabGIA
CertificateGIA 7556938122
Dimensions11.26 × 5.49 × 3.44 mm
L/W Ratio2.05
Culet sizeNone
Top View
11.26 mm5.49 mm1.22 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 7556938122
Side View
Table 61.0%Crown 35.51°Girdle: STK-THKPavilion 41.66°Culet: NoneDepth 62.6%

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: Oct 31
Current: £3,955 GBP|Low: £2,079 GBP|High: £4,202 GBP|Avg: £2,818 GBP|-5.9%
Helzberg Diamonds
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
November 5, 2026
Retailer 11£2,079 GBP
Retailer 2£2,130 GBP
Retailer 12£2,241 GBP
Retailer 13£2,248 GBP
Retailer 8£2,431 GBP
Retailer 5£2,505 GBP
Retailer 10£2,654 GBP
Retailer 3£2,672 GBP
Retailer 4£2,735 GBP
Retailer 7£2,773 GBP
Retailer 9£2,885 GBP
Retailer 14£3,507 GBP
Retailer 6£3,721 GBP
Helzberg Diamonds£3,955 GBP

29 data points across 14 retailers

14 retailers£2,079 GBP to £3,955 GBP

B+
Cheapest Retailer
-
£2,079 GBP
B+
Retailer 2
-
£2,130 GBP
View
B+
Retailer 3
-
£2,241 GBP
View
B+
Retailer 4
-
£2,248 GBP
View
B+
Retailer 5
-
£2,431 GBP
View
B
Retailer 6
-
£2,505 GBP
View
B+
Retailer 7
-
£2,654 GBP
View
B+
Retailer 8
-
£2,672 GBP
View
B
Retailer 9
-
£2,735 GBP
View
B
Retailer 10
-
£2,773 GBP
View
B
Retailer 11
-
£2,885 GBP
View
B
Retailer 12
-
£3,507 GBP
View
Retailer 13
-
£3,721 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Helzberg Diamonds
XZRNLLMPJOHII · Nov 3
£3,955 GBP
$5,294 USD
View
13 more retailers have this diamond
Prices start from £2,079 GBPSave up to £1,876 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+
1.22ct Marquise
£2,079 GBP