CaratHunter
Plans
Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 7403585801

Certificate GIA 7403585801

Diamond specifications and retailer prices

From £1,512 GBP
As of November 6, 2026
Save £2,742 GBP (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,254 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7403585801. Listed at 15 retailers as of November 5, 2026, with prices from £1,512 to £4,254, a £2,742 spread on the same certified stone. NZ Jewellers lists it at £4,254. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7403585801
Dimensions6.83 × 6.80 × 4.25 mm
L/W Ratio1.00
Top View
6.83 mm6.80 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7403585801
Side View
Table 55.0%CrownGirdle: MED-SLIPavilionCulet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,254 GBP|Low: £1,502 GBP|High: £4,254 GBP|Avg: £2,303 GBP
NZ Jewellers
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 6, 2026
Retailer 12£1,512 GBP
Retailer 4£1,823 GBP
Retailer 5£1,888 GBP
Retailer 2£1,921 GBP
Retailer 13£2,035 GBP
Retailer 15£2,035 GBP
Retailer 7£2,080 GBP
Retailer 8£2,107 GBP
Retailer 14£2,113 GBP
Retailer 6£2,140 GBP
Retailer 9£2,141 GBP
Retailer 3£2,348 GBP
Retailer 10£2,363 GBP
Retailer 11£3,556 GBP
NZ Jewellers£4,254 GBP

33 data points across 15 retailers

15 retailers£1,512 GBP to £4,254 GBP

A
Cheapest Retailer
-
£1,512 GBP
A
Retailer 2
-
£1,823 GBP
View
A
Retailer 3
-
£1,888 GBP
View
A
Retailer 4
-
£1,921 GBP
View
A
Retailer 5
-
£2,035 GBP
View
Retailer 6
-
£2,035 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,080 GBP
View
B+
Retailer 8
-
£2,107 GBP
View
B+
Retailer 9
-
£2,113 GBP
View
B+
Retailer 10
-
£2,140 GBP
View
A
Retailer 11
-
£2,141 GBP
View
B+
Retailer 12
-
£2,348 GBP
View
B+
Retailer 13
-
£2,363 GBP
View
B
Retailer 14
-
£3,556 GBP
View
Most Expensive
B
NZ Jewellers
a3efb251-99a5-4d4b-83a7-085bc56d7cb5 · Nov 5
£4,254 GBP
$5,726 USD
View
14 more retailers have this diamond
Prices start from £1,512 GBPSave up to £2,742 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.

A
1.21ct Round
£1,512 GBP