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Heart|Natural|GIA

1.23ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 6421591328

Certificate GIA 6421591328

Diamond specifications and retailer prices

From HK$30,597 HKD
As of November 6, 2026
Save HK$36,350 HKD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$66,947 HKD at NZ Jewellers · As of November 5, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6421591328. Listed at 13 retailers as of November 5, 2026, with prices from HK$30,597 to HK$66,947, a HK$36,350 spread on the same certified stone. NZ Jewellers lists it at HK$66,947. 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

1.23
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421591328
Dimensions7.28 × 6.27 × 3.74 mm
L/W Ratio1.16
Top View
7.28 mm6.27 mm1.23 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421591328
Side View
Table 59.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 59.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$66,947 HKD|Low: HK$27,815 HKD|High: HK$66,947 HKD|Avg: HK$43,778 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8HK$30,597 HKD
Retailer 2HK$38,176 HKD
Retailer 9HK$38,427 HKD
Retailer 10HK$38,427 HKD
Retailer 11HK$38,427 HKD
Retailer 6HK$38,442 HKD
Retailer 7HK$38,732 HKD
Retailer 3HK$44,336 HKD
Retailer 4HK$46,883 HKD
Retailer 5HK$59,564 HKD
NZ JewellersHK$66,947 HKD

43 data points across 11 retailers

13 retailersHK$30,597 HKD to HK$66,947 HKD

B
Cheapest Retailer
-
HK$30,597 HKD
Final sale: no returns
B
Retailer 2
-
HK$38,176 HKD
View
Retailer 3
-
HK$38,427 HKD
View
Price last confirmed 9 days ago
B
Retailer 4
-
HK$38,427 HKD
View
B
Retailer 5
-
HK$38,427 HKD
View
B
Retailer 6
-
HK$38,442 HKD
View
Retailer 7
-
HK$38,732 HKD
View
Price last confirmed 29 days ago
B
Retailer 8
-
HK$38,952 HKD
View
B
Retailer 9
-
HK$39,610 HKD
View
B
Retailer 10
-
HK$44,336 HKD
View
B
Retailer 11
-
HK$46,883 HKD
View
B
Retailer 12
-
HK$59,564 HKD
View
Most Expensive
B
NZ Jewellers
8df258f0-f6e5-44b8-aada-89b0f87417ad · Nov 5
HK$66,947 HKD
$8,542 USD
View
12 more retailers have this diamond
Prices start from HK$30,597 HKDSave up to HK$36,350 HKD

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
1.23ct Heart
HK$30,597 HKD