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Heart|Natural|GIA

1.30ct K SI1 Heart Natural Diamond

GD • K/SI1 • GIA 12144079

Certificate GIA 12144079

Diamond specifications and retailer prices

From $2,838 AUD
As of November 6, 2026
Save $1,444 AUD (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,282 AUD at B2C Jewels · As of November 6, 2026
View at B2C Jewels

About this 1.3ct natural heart diamond

This 1.3ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 12144079. Listed at 3 retailers as of November 6, 2026, with prices from $2,838 to $4,282, a $1,444 spread on the same certified stone. B2C Jewels lists it at $4,282. 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

1.30
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryFair
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 12144079
Dimensions6.46 × 7.71 × 4.50 mm
L/W Ratio1.19
Top View
6.46 mm7.71 mm1.30 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryFair
FluorescenceNone
CertificateGIA 12144079
Side View
Table 55.0%CrownGirdlePavilionCulet: SmallDepth 58.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,282 AUD|Low: $2,838 AUD|High: $6,468 AUD|Avg: $5,223 AUD|+1.1%
B2C Jewels
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$2,838 AUD
Retailer 2$4,154 AUD
B2C Jewels$4,282 AUD

37 data points across 3 retailers

3 retailers$2,838 AUD to $4,282 AUD

B+
Cheapest Retailer
-
$2,838 AUD
B
Retailer 2
-
$4,154 AUD
View
Most Expensive
B
B2C Jewels
18176600 · Nov 6
$4,282 AUD
$2,942 USD
View
2 more retailers have this diamond
Prices start from $2,838 AUDSave up to $1,444 AUD

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+
1.30ct Heart
$2,838 AUD