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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

VG • J/SI2 • GIA 1545818673

Certificate GIA 1545818673

Diamond specifications and retailer prices

From £1,815 GBP
As of November 6, 2026
Save £1,795 GBP (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,610 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545818673. Listed at 11 retailers as of November 6, 2026, with prices from £1,815 to £3,610, a £1,795 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,610. 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

1.21
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.83°
Pavilion angle38.11°
OriginNatural
Grading LabGIA
CertificateGIA 1545818673
Dimensions10.79 × 5.40 × 3.28 mm
L/W Ratio2.00
Culet sizeNone
Top View
10.79 mm5.40 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545818673
Side View
Table 61.0%Crown 40.83°Girdle: STK-VTKPavilion 38.11°Culet: NoneDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,815 GBP|Low: £1,617 GBP|High: £3,826 GBP|Avg: £2,482 GBP|-4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Wholesale Diamonds Direct
November 6, 2026
Retailer 4£1,617 GBP
Retailer 1£1,815 GBP
Retailer 6£2,023 GBP
Retailer 13£2,082 GBP
Retailer 2£2,294 GBP
Retailer 12£2,438 GBP
Retailer 9£2,442 GBP
Retailer 11£2,459 GBP
Retailer 7£2,578 GBP
Retailer 10£2,578 GBP
Retailer 5£2,618 GBP
Retailer 8£2,660 GBP
Retailer 3£2,776 GBP
Wholesale Diamonds Direct£3,610 GBP

27 data points across 14 retailers

11 retailers£1,815 GBP to £3,610 GBP

B+
Cheapest Retailer
-
£1,815 GBP
B+
Retailer 2
-
£2,023 GBP
View
B
Retailer 3
-
£2,438 GBP
View
B
Retailer 4
-
£2,442 GBP
View
B
Retailer 5
-
£2,459 GBP
View
B
Retailer 6
-
£2,578 GBP
View
B
Retailer 7
-
£2,578 GBP
View
B
Retailer 8
-
£2,618 GBP
View
B
Retailer 9
-
£2,660 GBP
View
B
Retailer 10
-
£2,776 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
663832597 · Nov 6
£3,610 GBP
$4,832 USD
View
10 more retailers have this diamond
Prices start from £1,815 GBPSave up to £1,795 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+
1.21ct Marquise
£1,815 GBP