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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 1549827419

Certificate GIA 1549827419

Diamond specifications and retailer prices

From £4,196 GBP
As of November 6, 2026
Save £2,283 GBP (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,479 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1549827419. Listed at 12 retailers as of November 5, 2026, with prices from £4,196 to £6,479, a £2,283 spread on the same certified stone. Cape Diamonds lists it at £6,479. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.78°
Pavilion angle41.63°
OriginNatural
Grading LabGIA
CertificateGIA 1549827419
Dimensions10.17 × 5.46 × 3.53 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.17 mm5.46 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549827419
Side View
Table 61.0%Crown 39.78°Girdle: THN-VTKPavilion 41.63°Culet: NoneDepth 64.7%

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 6
Current: £6,479 GBP|Low: £2,715 GBP|High: £6,566 GBP|Avg: £4,830 GBP|+20.8%
Cape Diamonds
Retailer 2
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Retailer 12
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Retailer 19
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Retailer 21
November 6, 2026
Retailer 14£2,715 GBP
Retailer 12£3,703 GBP
Retailer 8£3,938 GBP
Retailer 13£4,196 GBP
Retailer 17£4,471 GBP
Retailer 6£4,477 GBP
Retailer 7£4,498 GBP
Retailer 10£4,652 GBP
Retailer 20£4,721 GBP
Retailer 5£4,737 GBP
Retailer 4£4,811 GBP
Retailer 2£4,870 GBP
Retailer 16£5,042 GBP
Retailer 21£5,058 GBP
Retailer 18£5,349 GBP
Retailer 19£5,349 GBP
Retailer 15£5,529 GBP
Retailer 3£5,620 GBP
Retailer 11£6,084 GBP
Cape Diamonds£6,479 GBP
Retailer 9£6,566 GBP

3 data points across 21 retailers

12 retailers£4,196 GBP to £6,479 GBP

B+
Cheapest Retailer
-
£4,196 GBP
B+
Retailer 2
-
£4,471 GBP
View
B
Retailer 3
-
£4,721 GBP
View
B
Retailer 4
-
£4,737 GBP
View
Retailer 5
-
£4,870 GBP
View
B
Retailer 6
-
£5,042 GBP
View
B
Retailer 7
-
£5,058 GBP
View
B
Retailer 8
-
£5,349 GBP
View
B
Retailer 9
-
£5,349 GBP
View
B
Retailer 10
-
£5,529 GBP
View
B
Retailer 11
-
£5,620 GBP
View
Most Expensive
B
Cape Diamonds
cert_1549827419 · Nov 5
£6,479 GBP
ZAR 140,096 ZAR
View
11 more retailers have this diamond
Prices start from £4,196 GBPSave up to £2,283 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
£4,196 GBP