Oval|Lab Grown|IGI

6.55ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG754507999

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG754507999

Diamond specifications and retailer prices

From $20,385 USD

As of October 28, 2026

Save $39,059 USD (66%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: $59,444 USD at Cape Diamonds · As of October 29, 2026

View at Cape Diamonds

About this 6.55ct lab-grown oval diamond

This 6.55ct lab-grown oval sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754507999 or 754507999. Listed at 14 retailers as of October 28, 2026, with prices from $20,385 to $59,444, a $39,059 spread on the same certified stone. Cape Diamonds lists it at $59,444. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.55

Carat

Color

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.7°

Pavilion angle40.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754507999

Dimensions14.78 × 10.55 × 6.64 mm

L/W Ratio1.40

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG754507999

Side View

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: Oct 28

Current: $59,444 USD|Low: $19,247 USD|High: $114,844 USD|Avg: $48,024 USD|+1.9%

Cape Diamonds

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

November 1, 2026

Retailer 10$20,385 USD

Retailer 5$21,248 USD

Retailer 3$23,066 USD

Retailer 12$27,492 USD

Retailer 9$33,388 USD

Retailer 11$34,630 USD

Retailer 7$42,349 USD

Retailer 2$43,865 USD

Retailer 13$50,053 USD

Retailer 8$52,411 USD

Cape Diamonds$59,444 USD

Retailer 6$68,115 USD

Retailer 4$86,172 USD

Retailer 14$114,844 USD

30 data points across 14 retailers

14 retailers$20,385 USD to $59,444 USD

B+

Cheapest Retailer

$20,385 USD

B+

Retailer 2

$21,248 USD

View

B+

Retailer 3

$23,066 USD

View

B+

Retailer 4

$27,492 USD

View

Retailer 5

$33,388 USD

£26,290 GBP

View

Price last confirmed 7 days ago

B+

Retailer 6

$34,630 USD

View

Retailer 7

$42,349 USD

A$65,153 AUD

View

Retailer 8

$43,865 USD

£34,539 GBP

View

Retailer 9

$50,053 USD

View

Retailer 10

$52,411 USD

€49,915 EUR

View

Most Expensive

Cape Diamonds

cert_754507999 · Oct 29

$59,444 USD

ZAR 960,322 ZAR

View

10 more retailers have this diamond

Prices start from $20,385 USDSave up to $39,059 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.

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B+

6.55ct Oval

$20,385 USD