CaratHunter
Plans
Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1415832363

Certificate GIA 1415832363

Diamond specifications and retailer prices

From £3,183 GBP
As of November 5, 2026
Save £1,789 GBP (36%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £4,972 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1415832363. Listed at 5 retailers as of November 5, 2026, with prices from £3,183 to £4,972, a £1,789 spread on the same certified stone. Cape Diamonds lists it at £4,972. 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

1.21
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1415832363
Dimensions6.11 × 5.48 × 4.04 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.11 mm5.48 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1415832363
Side View
Table 59.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 73.7%

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 5
Current: £4,972 GBP|Low: £2,952 GBP|High: £5,009 GBP|Avg: £3,911 GBP|+2.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3£3,153 GBP
Retailer 4£3,247 GBP
Retailer 2£4,336 GBP
Cape Diamonds£4,972 GBP

37 data points across 4 retailers

5 retailers£3,183 GBP to £4,972 GBP

Retailer 1
-
£3,153 GBP
Price last confirmed 16 days ago
B+
Retailer 2
-
£3,183 GBP
View
Retailer 3
-
£3,220 GBP
View
Price last confirmed 7 days ago
B
Retailer 4
-
£4,336 GBP
View
Most Expensive
B
Cape Diamonds
cert_1415832363 · Nov 5
£4,972 GBP
ZAR 107,515 ZAR
View
4 more retailers have this diamond
Prices start from £3,183 GBPSave up to £1,789 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 Cushion
£3,183 GBP