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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 $4,917 NZD
As of November 6, 2026
Save $1,928 NZD (28%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,845 NZD 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 $4,917 to $6,845, a $1,928 spread on the same certified stone. Michael Trio lists it at $6,845. 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: $6,845 NZD|Low: $4,917 NZD|High: $6,913 NZD|Avg: $5,914 NZD|+7.2%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3$4,917 NZD
Retailer 5$5,522 NZD
Retailer 2$5,902 NZD
Retailer 6$5,978 NZD
Retailer 4$6,144 NZD
Michael Trio$6,845 NZD

12 data points across 6 retailers

6 retailers$4,917 NZD to $6,845 NZD

A
Cheapest Retailer
-
$4,917 NZD
B+
Retailer 2
-
$5,522 NZD
View
B+
Retailer 3
-
$5,902 NZD
View
B+
Retailer 4
-
$5,978 NZD
View
B+
Retailer 5
-
$6,144 NZD
View
Final sale: no returns
Most Expensive
B
Michael Trio
1234284783 · Nov 6
$6,845 NZD
SGD 5,128 SGD
View
5 more retailers have this diamond
Prices start from $4,917 NZDSave up to $1,928 NZD

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
$4,917 NZD