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Round|Natural|GIA

1.21ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 7448193127

Certificate GIA 7448193127

Diamond specifications and retailer prices

From £1,132 GBP
As of November 6, 2026
Save £2,152 GBP (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,283 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7448193127. Listed at 12 retailers as of November 5, 2026, with prices from £1,132 to £3,283, a £2,152 spread on the same certified stone. NZ Jewellers lists it at £3,283. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7448193127
Dimensions6.80 × 6.75 × 4.26 mm
L/W Ratio1.01
Top View
6.80 mm6.75 mm1.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7448193127
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 62.9%

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: £3,283 GBP|Low: £1,122 GBP|High: £3,283 GBP|Avg: £1,588 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
November 6, 2026
Retailer 7£1,132 GBP
Retailer 3£1,227 GBP
Retailer 2£1,323 GBP
Retailer 8£1,346 GBP
Retailer 10£1,346 GBP
Retailer 12£1,389 GBP
Retailer 9£1,408 GBP
Retailer 4£1,464 GBP
Retailer 11£1,553 GBP
Retailer 6£1,643 GBP
Retailer 5£1,823 GBP
NZ Jewellers£3,283 GBP

32 data points across 12 retailers

12 retailers£1,132 GBP to £3,283 GBP

A
Cheapest Retailer
-
£1,132 GBP
B+
Retailer 2
-
£1,227 GBP
View
B+
Retailer 3
-
£1,323 GBP
View
B+
Retailer 4
-
£1,346 GBP
View
Retailer 5
-
£1,346 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,389 GBP
View
B+
Retailer 7
-
£1,408 GBP
View
B
Retailer 8
-
£1,464 GBP
View
B
Retailer 9
-
£1,553 GBP
View
B
Retailer 10
-
£1,643 GBP
View
B
Retailer 11
-
£1,823 GBP
View
Most Expensive
C
NZ Jewellers
07d1dc1e-cb35-4c30-a369-067f9113111a · Nov 5
£3,283 GBP
$4,419 USD
View
11 more retailers have this diamond
Prices start from £1,132 GBPSave up to £2,152 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
£1,132 GBP