CaratHunter
Plans
Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1538771191

Certificate GIA 1538771191

Diamond specifications and retailer prices

From ₹2,23,248 INR
As of November 6, 2026
Save ₹44,048 INR (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: ₹2,67,296 INR at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1538771191. Listed at 6 retailers as of November 5, 2026, with prices from ₹2,23,248 to ₹2,67,296, a ₹44,048 spread on the same certified stone. Blue Nile lists it at ₹2,67,296. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1538771191
Dimensions6.89 × 8.10 × 4.80 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cloud, Indented Natural
Top View
6.89 mm8.10 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538771191
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.2%

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: ₹2,67,296 INR|Low: ₹2,23,248 INR|High: ₹3,31,725 INR|Avg: ₹2,60,111 INR|-19.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4₹2,23,248 INR
Retailer 6₹2,28,977 INR
Retailer 3₹2,39,872 INR
Retailer 2₹2,40,153 INR
Retailer 5₹2,59,407 INR
Blue Nile₹2,67,296 INR

45 data points across 6 retailers

6 retailers₹2,23,248 INR to ₹2,67,296 INR

A
Cheapest Retailer
-
₹2,23,248 INR
A
Retailer 2
-
₹2,28,977 INR
View
A
Retailer 3
-
₹2,39,872 INR
View
A
Retailer 4
-
₹2,40,153 INR
View
A
Retailer 5
-
₹2,59,407 INR
View
Most Expensive
A
Blue Nile
27029150 · Nov 5
₹2,67,296 INR
$2,846 USD
View
5 more retailers have this diamond
Prices start from ₹2,23,248 INRSave up to ₹44,048 INR

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
1.51ct Heart
₹2,23,248 INR