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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 2235875742

Certificate GIA 2235875742

Diamond specifications and retailer prices

From £2,878 GBP
As of November 6, 2026
Save £1,112 GBP (28%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,990 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2235875742. Listed at 7 retailers as of November 5, 2026, with prices from £2,878 to £3,990, a £1,112 spread on the same certified stone. Cape Diamonds lists it at £3,990. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle40.96°
Pavilion angle39.82°
OriginNatural
Grading LabGIA
CertificateGIA 2235875742
Dimensions10.02 × 5.41 × 3.56 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.02 mm5.41 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2235875742
Side View
Table 60.0%Crown 40.96°Girdle: MED-VTKPavilion 39.82°Culet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,990 GBP|Low: £1,730 GBP|High: £3,990 GBP|Avg: £2,972 GBP
Cape 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
Retailer 15
November 5, 2026
Retailer 4£1,730 GBP
Retailer 3£2,394 GBP
Retailer 13£2,533 GBP
Retailer 14£2,588 GBP
Retailer 15£2,811 GBP
Retailer 5£2,825 GBP
Retailer 11£2,878 GBP
Retailer 12£3,101 GBP
Retailer 2£3,170 GBP
Retailer 10£3,320 GBP
Retailer 9£3,437 GBP
Retailer 7£3,501 GBP
Retailer 6£3,626 GBP
Retailer 8£3,694 GBP
Cape Diamonds£3,990 GBP

6 data points across 15 retailers

7 retailers£2,878 GBP to £3,990 GBP

B
Cheapest Retailer
-
£2,878 GBP
B
Retailer 2
-
£3,101 GBP
View
B
Retailer 3
-
£3,170 GBP
View
B
Retailer 4
-
£3,320 GBP
View
Retailer 5
-
£3,437 GBP
View
Price last confirmed 44 days ago
Retailer 6
-
£3,694 GBP
View
Price last confirmed 10 days ago
Most Expensive
C
Cape Diamonds
cert_2235875742 · Nov 5
£3,990 GBP
ZAR 86,285 ZAR
View
6 more retailers have this diamond
Prices start from £2,878 GBPSave up to £1,112 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
£2,878 GBP