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Heart|Natural|GIA

1.25ct H SI2 Heart Natural Diamond

GD • H/SI2 • GIA 2456078492

Certificate GIA 2456078492

Diamond specifications and retailer prices

From £2,308 GBP
$3,093 USD
As of November 2, 2026
Save £1,176 GBP (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,485 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.25ct natural heart diamond

This 1.25ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2456078492. Listed at 3 retailers as of November 2, 2026, with prices from £2,308 to £3,485, a £1,176 spread on the same certified stone. 77 Diamonds lists it at £3,485. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.25
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2456078492
Dimensions6.28 × 6.04 × 4.11 mm
L/W Ratio1.04
Top View
6.28 mm6.04 mm1.25 ctH / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2456078492
Side View
Table 63.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.1%

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 2
Current: £3,485 GBP|Low: £2,231 GBP|High: £3,498 GBP|Avg: £2,643 GBP|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6£2,231 GBP
Retailer 2£2,308 GBP
Retailer 7£2,360 GBP
Retailer 5£2,386 GBP
Retailer 4£2,706 GBP
Retailer 3£3,046 GBP
77 Diamonds£3,485 GBP

32 data points across 7 retailers

3 retailers£2,308 GBP to £3,485 GBP

B+
Cheapest Retailer
-
£2,308 GBP
$3,093 USD
B
Retailer 2
-
£2,608 GBP
€3,328 EUR
View
Most Expensive
B
77 Diamonds
CUSZ8NQVYDKT · Nov 2
£3,485 GBP
View
2 more retailers have this diamond
Prices start from £2,308 GBPSave up to £1,176 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+
1.25ct Heart
£2,308 GBP