CaratHunter
Plans
Radiant|Natural|GIA

1.21ct I IF Radiant Natural Diamond

EX • I/IF • GIA 1518234348

Certificate GIA 1518234348

Diamond specifications and retailer prices

From £4,046 GBP
As of November 6, 2026
Save £623 GBP (13%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £4,669 GBP at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1518234348. Listed at 4 retailers as of November 6, 2026, with prices from £4,046 to £4,669, a £623 spread on the same certified stone. 77 Diamonds lists it at £4,669. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
I
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1518234348
Dimensions7.59 × 5.08 × 3.47 mm
L/W Ratio1.49
Girdle conditionPolished
Culet sizeNone
Top View
7.59 mm5.08 mm1.21 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1518234348
Side View
Table 65.0%CrownGirdlePavilionCulet: NoneDepth 68.3%

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: £4,669 GBP|Low: £4,046 GBP|High: £4,729 GBP|Avg: £4,371 GBP|-0.1%
77 Diamonds
Retailer 2
November 7, 2026
Retailer 2£4,046 GBP
77 Diamonds£4,669 GBP

36 data points across 2 retailers

4 retailers£4,046 GBP to £4,669 GBP

B+
Cheapest Retailer
-
£4,046 GBP
Retailer 2
-
£4,046 GBP
View
Price last confirmed 24 days ago
Retailer 3
-
£4,046 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
77 Diamonds
RADMBPQMQ6CKM · Nov 7
£4,669 GBP
View
3 more retailers have this diamond
Prices start from £4,046 GBPSave up to £623 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 Radiant
£4,046 GBP