Heart|Natural|GIA

1.23ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 1232913295

Certificate GIA 1232913295

Diamond specifications and retailer prices

From $2,430 USD
As of November 1, 2026
Save $3,005 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,608 USD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232913295. Listed at 16 retailers as of November 1, 2026, with a 124% 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

1.23
Carat
G
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232913295
Dimensions6.43 × 7.34 × 4.39 mm
L/W Ratio1.14
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
6.43 mm7.34 mm1.23 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232913295
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.9%

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 1
Current: $5,608 USD|Low: $2,430 USD|High: $5,608 USD|Avg: $3,407 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 13$2,430 USD
Retailer 9$2,500 USD
Retailer 15$2,524 USD
Retailer 16$2,916 USD
Retailer 8$3,018 USD
Retailer 14$3,028 USD
Retailer 3$3,090 USD
Retailer 2$3,153 USD
Retailer 4$3,178 USD
Retailer 6$3,350 USD
Retailer 7$3,350 USD
Retailer 17$3,365 USD
Retailer 5$3,460 USD
Retailer 10$3,783 USD
Retailer 11$3,967 USD
Retailer 12$5,435 USD
NZ Jewellers$5,608 USD

31 data points across 17 retailers

16 retailers$2,430 USD to $5,435 USD

A
Cheapest Retailer
-
$2,430 USD
B+
Retailer 2
-
$2,524 USD
View
Retailer 3
-
$2,916 USD
View
Price last confirmed 15 days ago
Retailer 4
-
$3,028 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$3,090 USD
View
B+
Retailer 6
-
$3,153 USD
View
B+
Retailer 7
-
$3,178 USD
View
B+
Retailer 8
-
$3,350 USD
View
B+
Retailer 9
-
$3,350 USD
View
Retailer 10
-
$3,365 USD
View
Price last confirmed 52 days ago
Retailer 11
-
$3,365 USD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$3,460 USD
View
B+
Retailer 13
-
$3,783 USD
View
B
Retailer 14
-
$3,967 USD
View
B
Retailer 15
-
$5,435 USD
View
Most Expensive
NZ Jewellers
bdcd893b-9df2-49a8-b8b8-b0fae6f44362 · Oct 21
$5,608 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $2,430 USDSave up to $3,005 USD

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
1.23ct Heart
$2,430 USD