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Heart|Natural|GIA

1.25ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 1563575580

Certificate GIA 1563575580

Diamond specifications and retailer prices

From £2,037 GBP
As of November 6, 2026
Save £798 GBP (28%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,835 GBP at Michael Trio · As of November 6, 2026
View at Michael Trio

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1563575580. Listed at 6 retailers as of November 6, 2026, with prices from £2,037 to £2,835, a £798 spread on the same certified stone. Michael Trio lists it at £2,835. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563575580
Dimensions7.60 × 6.65 × 4.35 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.60 mm6.65 mm1.25 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563575580
Side View
Table 53.0%CrownGirdle: ThickPavilionCulet: NDepth 57.3%

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: £2,835 GBP|Low: £2,037 GBP|High: £2,863 GBP|Avg: £2,450 GBP|+7.2%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£2,037 GBP
Retailer 5£2,287 GBP
Retailer 2£2,445 GBP
Retailer 6£2,476 GBP
Retailer 4£2,545 GBP
Michael Trio£2,835 GBP

12 data points across 6 retailers

6 retailers£2,037 GBP to £2,835 GBP

A
Cheapest Retailer
-
£2,037 GBP
B+
Retailer 2
-
£2,287 GBP
View
B+
Retailer 3
-
£2,445 GBP
View
B+
Retailer 4
-
£2,476 GBP
View
B+
Retailer 5
-
£2,545 GBP
View
Final sale: no returns
Most Expensive
B
Michael Trio
1234284783 · Nov 6
£2,835 GBP
SGD 5,128 SGD
View
5 more retailers have this diamond
Prices start from £2,037 GBPSave up to £798 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
1.25ct Heart
£2,037 GBP