Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7556860293

Certificate GIA 7556860293

Diamond specifications and retailer prices

From £1,588 GBP
As of November 5, 2026
Save £1,639 GBP (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,244 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7556860293. Listed at 11 retailers as of November 5, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7556860293
Dimensions6.76 × 4.25 × 4.25 mm
L/W Ratio1.59
Culet sizeNone
Top View
6.76 mm4.25 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7556860293
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 5
Current: £1,588 GBP|Low: £1,579 GBP|High: £3,574 GBP|Avg: £2,464 GBP|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£1,588 GBP
Retailer 6£1,926 GBP
Retailer 5£1,949 GBP
Retailer 4£2,127 GBP
Retailer 9£2,160 GBP
Retailer 3£2,404 GBP
Retailer 8£2,404 GBP
Retailer 2£2,510 GBP
Retailer 7£3,024 GBP
Wholesale Diamonds Direct£3,244 GBP

39 data points across 10 retailers

11 retailers£1,588 GBP to £3,228 GBP

A
Cheapest Retailer
-
£1,588 GBP
Retailer 2
-
£1,926 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£1,949 GBP
View
Price last confirmed 7 days ago
Retailer 4
-
£2,127 GBP
View
Price last confirmed 7 days ago
Retailer 5
-
£2,160 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
£2,404 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
£2,404 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£2,510 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
£3,024 GBP
View
Price last confirmed 8 days ago
B
Retailer 10
-
£3,228 GBP
View
Most Expensive
Wholesale Diamonds Direct
530461948 · Oct 26
£3,244 GBP
$4,343 USD
View
Price last confirmed 11 days ago
10 more retailers have this diamond
Prices start from £1,588 GBPSave up to £1,639 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
£1,588 GBP