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Round|Lab Grown|IGI

1.70ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG451055652

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055652

Diamond specifications and retailer prices

From $2,900 AUD
As of November 5, 2026
Save $2,494 AUD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $9,579 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055652 or 451055652. Listed at 8 retailers as of November 5, 2026, with a 86% 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

1.70
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055652
Dimensions7.63 × 7.66 × 4.69 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.63 mm7.66 mm1.70 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055652
Side View
Table 60.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $9,579 AUD|Low: $2,783 AUD|High: $9,733 AUD|Avg: $5,135 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$2,900 AUD
Retailer 6$3,154 AUD
Retailer 4$3,363 AUD
Retailer 8$4,284 AUD
Retailer 7$4,623 AUD
Retailer 5$5,263 AUD
Retailer 2$5,394 AUD
Retailer 9$7,525 AUD
MOH London$9,579 AUD

15 data points across 9 retailers

8 retailers$2,900 AUD to $5,394 AUD

B+
Cheapest Retailer
-
$2,900 AUD
B
Retailer 2
-
$3,154 AUD
View
Retailer 3
-
$3,363 AUD
View
Price last confirmed 26 days ago
B
Retailer 4
-
$3,363 AUD
View
B
Retailer 5
-
$4,623 AUD
View
B
Retailer 6
-
$5,263 AUD
View
B
Retailer 7
-
$5,394 AUD
View
Most Expensive
MOH London
LG451055652 · Nov 5
$9,579 AUD
£5,280 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $2,900 AUDSave up to $2,494 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+
1.70ct Round
$2,900 AUD