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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 7562711418

Certificate GIA 7562711418

Diamond specifications and retailer prices

From £2,538 GBP
$3,400 USD
As of October 31, 2026
Save £2,009 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,547 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7562711418. Listed at 15 retailers as of October 31, 2026, with prices from £2,538 to £4,547, a £2,009 spread on the same certified stone. Helzberg Diamonds lists it at £4,547. 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

1.20
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7562711418
Dimensions10.46 × 5.58 × 3.33 mm
L/W Ratio1.87
Top View
10.46 mm5.58 mm1.20 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7562711418
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 59.6%

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: £4,547 GBP|Low: £2,538 GBP|High: £4,547 GBP|Avg: £3,216 GBP
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 2, 2026
Retailer 9£2,538 GBP
Retailer 6£2,550 GBP
Retailer 3£2,579 GBP
Retailer 14£2,712 GBP
Retailer 10£2,750 GBP
Retailer 5£2,770 GBP
Retailer 7£2,934 GBP
Retailer 12£3,227 GBP
Retailer 4£3,264 GBP
Retailer 2£3,277 GBP
Retailer 8£3,520 GBP
Retailer 11£4,279 GBP
Retailer 13£4,514 GBP
Helzberg Diamonds£4,547 GBP

10 data points across 14 retailers

15 retailers£2,538 GBP to £4,547 GBP

B+
Cheapest Retailer
-
£2,538 GBP
$3,400 USD
B+
Retailer 2
-
£2,550 GBP
$3,417 USD
View
B
Retailer 3
-
£2,579 GBP
$3,456 USD
View
B
Retailer 4
-
£2,585 GBP
SGD 4,681 SGD
View
B
Retailer 5
-
£2,712 GBP
$3,634 USD
View
B
Retailer 6
-
£2,750 GBP
$3,685 USD
View
B
Retailer 7
-
£2,770 GBP
SGD 5,015 SGD
View
B
Retailer 8
-
£2,934 GBP
View
B
Retailer 9
-
£3,227 GBP
$4,324 USD
View
B
Retailer 10
-
£3,264 GBP
$4,373 USD
View
B
Retailer 11
-
£3,277 GBP
€4,182 EUR
View
B
Retailer 12
-
£3,520 GBP
$4,717 USD
View
C
Retailer 13
-
£4,279 GBP
$5,734 USD
View
C
Retailer 14
-
£4,514 GBP
$6,048 USD
View
Most Expensive
C
Helzberg Diamonds
XZRNLMINHHKHO · Nov 1
£4,547 GBP
$6,092 USD
View
14 more retailers have this diamond
Prices start from £2,538 GBPSave up to £2,009 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 Marquise
£2,538 GBP